Cardiac muscle myocyte

 

  

Cardiac muscle cell is short and it consist of one or more rounded nuclei.   It also has similar organelles with striated muscle in its sarcoplasm and that include numerous mitochondria. Its myofibrils are not many as in other myocytes. Cardiac myocyte is similar to red skeletal muscle rather than white one and just like red meat, it also has large amounts of myoglobin and glycogen.

The myofibrils have actin and myosin myofilaments components which are disposed in a similar fashion as in the striated muscle.   They have A bands which are dark portions consisting of actin and myosin.   They have I bands, consisting of only actin.   They have the Hensen line on the A band and also the Z disc which delimits the extents of the sarcomere

 

 

Introduction

Histology

   Smooth muscle

   Striated muscle

   Cardiac muscle

Embryology
Gross anatomy
Organ integration
Clinical anatomy

Quiz

Physiology

Smooth muscle      

Striated muscle      

Cardiac muscle      

Biochemistry

Pharmacology
Smooth muscle      

Striated muscle    

Cardiac muscle      

Chemical Pathology

Anatomical Pathology

Imaging

Medicine

Surgery

  
Creator: Oluwole Ogunranti

 

 
    

        

 

 

 

 

 

 

 

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